Home / 20,588,885.79-28,412,398.40-11,169,538.35

Finding the Fourth Proportional to 20,588,885.79, 28,412,398.40 and 11,169,538.35

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Solution

The fourth proportional to 20,588,885.79, 28,412,398.40 and 11,169,538.35 is: 15,413,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588,885.79 : 28,412,398.40 = 11,169,538.35 : x
  2. Step 2: Convert to fraction form
    20,588,885.79/28,412,398.40 = 11,169,538.35/x
  3. Step 3: Cross multiply
    20,588,885.79x = 28,412,398.40 × 11,169,538.35
  4. Step 4: Simplify right side
    20,588,885.79x = 317,353,373,488,430.94
  5. Step 5: Solve for x
    x = 317,353,373,488,430.94/20,588,885.79
  6. Step 6: Final answer
    x = 15,413,819.70

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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.