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Finding the Fourth Proportional to 15,869.04, 21,898.09 and 8,697.81

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Solution

The fourth proportional to 15,869.04, 21,898.09 and 8,697.81 is: 12,002.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.04 : 21,898.09 = 8,697.81 : x
  2. Step 2: Convert to fraction form
    15,869.04/21,898.09 = 8,697.81/x
  3. Step 3: Cross multiply
    15,869.04x = 21,898.09 × 8,697.81
  4. Step 4: Simplify right side
    15,869.04x = 190,465,294.95
  5. Step 5: Solve for x
    x = 190,465,294.95/15,869.04
  6. Step 6: Final answer
    x = 12,002.32

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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.