Home / 20,860,811.60-31,291,217.40-17,680,038.80

Finding the Fourth Proportional to 20,860,811.60, 31,291,217.40 and 17,680,038.80

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Solution

The fourth proportional to 20,860,811.60, 31,291,217.40 and 17,680,038.80 is: 26,520,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860,811.60 : 31,291,217.40 = 17,680,038.80 : x
  2. Step 2: Convert to fraction form
    20,860,811.60/31,291,217.40 = 17,680,038.80/x
  3. Step 3: Cross multiply
    20,860,811.60x = 31,291,217.40 × 17,680,038.80
  4. Step 4: Simplify right side
    20,860,811.60x = 553,229,937,731,235.12
  5. Step 5: Solve for x
    x = 553,229,937,731,235.12/20,860,811.60
  6. Step 6: Final answer
    x = 26,520,058.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.