Home / 28,978,319.68-39,987,484.32-15,925,428.16

Finding the Fourth Proportional to 28,978,319.68, 39,987,484.32 and 15,925,428.16

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Solution

The fourth proportional to 28,978,319.68, 39,987,484.32 and 15,925,428.16 is: 21,975,663.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,319.68 : 39,987,484.32 = 15,925,428.16 : x
  2. Step 2: Convert to fraction form
    28,978,319.68/39,987,484.32 = 15,925,428.16/x
  3. Step 3: Cross multiply
    28,978,319.68x = 39,987,484.32 × 15,925,428.16
  4. Step 4: Simplify right side
    28,978,319.68x = 636,817,808,837,286.50
  5. Step 5: Solve for x
    x = 636,817,808,837,286.50/28,978,319.68
  6. Step 6: Final answer
    x = 21,975,663.73

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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.