Home / 20,680,652.16-28,538,742.42-11,513,295.72

Finding the Fourth Proportional to 20,680,652.16, 28,538,742.42 and 11,513,295.72

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Solution

The fourth proportional to 20,680,652.16, 28,538,742.42 and 11,513,295.72 is: 15,888,037.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680,652.16 : 28,538,742.42 = 11,513,295.72 : x
  2. Step 2: Convert to fraction form
    20,680,652.16/28,538,742.42 = 11,513,295.72/x
  3. Step 3: Cross multiply
    20,680,652.16x = 28,538,742.42 × 11,513,295.72
  4. Step 4: Simplify right side
    20,680,652.16x = 328,574,980,958,368.50
  5. Step 5: Solve for x
    x = 328,574,980,958,368.50/20,680,652.16
  6. Step 6: Final answer
    x = 15,888,037.69

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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.