Home / 15,853,866-21,877,602.92-8,978,397.28

Finding the Fourth Proportional to 15,853,866, 21,877,602.92 and 8,978,397.28

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Solution

The fourth proportional to 15,853,866, 21,877,602.92 and 8,978,397.28 is: 12,389,773.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853,866 : 21,877,602.92 = 8,978,397.28 : x
  2. Step 2: Convert to fraction form
    15,853,866/21,877,602.92 = 8,978,397.28/x
  3. Step 3: Cross multiply
    15,853,866x = 21,877,602.92 × 8,978,397.28
  4. Step 4: Simplify right side
    15,853,866x = 196,425,810,549,848.06
  5. Step 5: Solve for x
    x = 196,425,810,549,848.06/15,853,866
  6. Step 6: Final answer
    x = 12,389,773.61

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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.