Home / 15,535,820-21,440,599.20-9,009,392.80

Finding the Fourth Proportional to 15,535,820, 21,440,599.20 and 9,009,392.80

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Solution

The fourth proportional to 15,535,820, 21,440,599.20 and 9,009,392.80 is: 12,433,639.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535,820 : 21,440,599.20 = 9,009,392.80 : x
  2. Step 2: Convert to fraction form
    15,535,820/21,440,599.20 = 9,009,392.80/x
  3. Step 3: Cross multiply
    15,535,820x = 21,440,599.20 × 9,009,392.80
  4. Step 4: Simplify right side
    15,535,820x = 193,166,780,060,165.78
  5. Step 5: Solve for x
    x = 193,166,780,060,165.78/15,535,820
  6. Step 6: Final answer
    x = 12,433,639.17

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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.