Home / 15,526.91-21,426.53-8,812.40

Finding the Fourth Proportional to 15,526.91, 21,426.53 and 8,812.40

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Solution

The fourth proportional to 15,526.91, 21,426.53 and 8,812.40 is: 12,160.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,526.91 : 21,426.53 = 8,812.40 : x
  2. Step 2: Convert to fraction form
    15,526.91/21,426.53 = 8,812.40/x
  3. Step 3: Cross multiply
    15,526.91x = 21,426.53 × 8,812.40
  4. Step 4: Simplify right side
    15,526.91x = 188,819,001.78
  5. Step 5: Solve for x
    x = 188,819,001.78/15,526.91
  6. Step 6: Final answer
    x = 12,160.76

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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.