Home / 21,070.16-31,596.45-8,581.71

Finding the Fourth Proportional to 21,070.16, 31,596.45 and 8,581.71

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Solution

The fourth proportional to 21,070.16, 31,596.45 and 8,581.71 is: 12,868.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.16 : 31,596.45 = 8,581.71 : x
  2. Step 2: Convert to fraction form
    21,070.16/31,596.45 = 8,581.71/x
  3. Step 3: Cross multiply
    21,070.16x = 31,596.45 × 8,581.71
  4. Step 4: Simplify right side
    21,070.16x = 271,151,657.23
  5. Step 5: Solve for x
    x = 271,151,657.23/21,070.16
  6. Step 6: Final answer
    x = 12,868.99

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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.