Home / 12,687,434.28-17,508,920.40-7,180,808.76

Finding the Fourth Proportional to 12,687,434.28, 17,508,920.40 and 7,180,808.76

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Solution

The fourth proportional to 12,687,434.28, 17,508,920.40 and 7,180,808.76 is: 9,909,663.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687,434.28 : 17,508,920.40 = 7,180,808.76 : x
  2. Step 2: Convert to fraction form
    12,687,434.28/17,508,920.40 = 7,180,808.76/x
  3. Step 3: Cross multiply
    12,687,434.28x = 17,508,920.40 × 7,180,808.76
  4. Step 4: Simplify right side
    12,687,434.28x = 125,728,208,986,462.69
  5. Step 5: Solve for x
    x = 125,728,208,986,462.69/12,687,434.28
  6. Step 6: Final answer
    x = 9,909,663.86

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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.