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Finding the Fourth Proportional to 15,574.59, 21,492.95 and 8,501.40

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Solution

The fourth proportional to 15,574.59, 21,492.95 and 8,501.40 is: 11,731.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,574.59 : 21,492.95 = 8,501.40 : x
  2. Step 2: Convert to fraction form
    15,574.59/21,492.95 = 8,501.40/x
  3. Step 3: Cross multiply
    15,574.59x = 21,492.95 × 8,501.40
  4. Step 4: Simplify right side
    15,574.59x = 182,720,122.62
  5. Step 5: Solve for x
    x = 182,720,122.62/15,574.59
  6. Step 6: Final answer
    x = 11,731.94

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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.