Home / 20,392,357.65-28,142,196.15-11,099,478.91

Finding the Fourth Proportional to 20,392,357.65, 28,142,196.15 and 11,099,478.91

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Solution

The fourth proportional to 20,392,357.65, 28,142,196.15 and 11,099,478.91 is: 15,317,685.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,357.65 : 28,142,196.15 = 11,099,478.91 : x
  2. Step 2: Convert to fraction form
    20,392,357.65/28,142,196.15 = 11,099,478.91/x
  3. Step 3: Cross multiply
    20,392,357.65x = 28,142,196.15 × 11,099,478.91
  4. Step 4: Simplify right side
    20,392,357.65x = 312,363,712,648,008.19
  5. Step 5: Solve for x
    x = 312,363,712,648,008.19/20,392,357.65
  6. Step 6: Final answer
    x = 15,317,685.09

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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.