Home / 12,480,412.80-18,683,294.40-7,429,123.20

Finding the Fourth Proportional to 12,480,412.80, 18,683,294.40 and 7,429,123.20

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Solution

The fourth proportional to 12,480,412.80, 18,683,294.40 and 7,429,123.20 is: 11,121,466.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,412.80 : 18,683,294.40 = 7,429,123.20 : x
  2. Step 2: Convert to fraction form
    12,480,412.80/18,683,294.40 = 7,429,123.20/x
  3. Step 3: Cross multiply
    12,480,412.80x = 18,683,294.40 × 7,429,123.20
  4. Step 4: Simplify right side
    12,480,412.80x = 138,800,495,879,470.08
  5. Step 5: Solve for x
    x = 138,800,495,879,470.08/12,480,412.80
  6. Step 6: Final answer
    x = 11,121,466.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.