Home / 10,421.90-15,635.09-5,981.62

Finding the Fourth Proportional to 10,421.90, 15,635.09 and 5,981.62

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Solution

The fourth proportional to 10,421.90, 15,635.09 and 5,981.62 is: 8,973.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.90 : 15,635.09 = 5,981.62 : x
  2. Step 2: Convert to fraction form
    10,421.90/15,635.09 = 5,981.62/x
  3. Step 3: Cross multiply
    10,421.90x = 15,635.09 × 5,981.62
  4. Step 4: Simplify right side
    10,421.90x = 93,523,088.87
  5. Step 5: Solve for x
    x = 93,523,088.87/10,421.90
  6. Step 6: Final answer
    x = 8,973.71

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1.5x scale

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.