Home / 15,528.40-21,429.71-8,723.62

Finding the Fourth Proportional to 15,528.40, 21,429.71 and 8,723.62

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Solution

The fourth proportional to 15,528.40, 21,429.71 and 8,723.62 is: 12,038.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.40 : 21,429.71 = 8,723.62 : x
  2. Step 2: Convert to fraction form
    15,528.40/21,429.71 = 8,723.62/x
  3. Step 3: Cross multiply
    15,528.40x = 21,429.71 × 8,723.62
  4. Step 4: Simplify right side
    15,528.40x = 186,944,591.16
  5. Step 5: Solve for x
    x = 186,944,591.16/15,528.40
  6. Step 6: Final answer
    x = 12,038.88

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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.