Home / 12,913,158.18-17,820,964.23-7,111,938.45

Finding the Fourth Proportional to 12,913,158.18, 17,820,964.23 and 7,111,938.45

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Solution

The fourth proportional to 12,913,158.18, 17,820,964.23 and 7,111,938.45 is: 9,814,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913,158.18 : 17,820,964.23 = 7,111,938.45 : x
  2. Step 2: Convert to fraction form
    12,913,158.18/17,820,964.23 = 7,111,938.45/x
  3. Step 3: Cross multiply
    12,913,158.18x = 17,820,964.23 × 7,111,938.45
  4. Step 4: Simplify right side
    12,913,158.18x = 126,741,600,723,411.66
  5. Step 5: Solve for x
    x = 126,741,600,723,411.66/12,913,158.18
  6. Step 6: Final answer
    x = 9,814,918.93

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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.