Home / 15,191,371,109.70-20,964,839,747.13-9,169,780,798.98

Finding the Fourth Proportional to 15,191,371,109.70, 20,964,839,747.13 and 9,169,780,798.98

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Solution

The fourth proportional to 15,191,371,109.70, 20,964,839,747.13 and 9,169,780,798.98 is: 12,654,748,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191,371,109.70 : 20,964,839,747.13 = 9,169,780,798.98 : x
  2. Step 2: Convert to fraction form
    15,191,371,109.70/20,964,839,747.13 = 9,169,780,798.98/x
  3. Step 3: Cross multiply
    15,191,371,109.70x = 20,964,839,747.13 × 9,169,780,798.98
  4. Step 4: Simplify right side
    15,191,371,109.70x = 192,242,984,966,925,385,728
  5. Step 5: Solve for x
    x = 192,242,984,966,925,385,728/15,191,371,109.70
  6. Step 6: Final answer
    x = 12,654,748,776.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.