Home / 42,479.52-63,721.76-12,898.32

Finding the Fourth Proportional to 42,479.52, 63,721.76 and 12,898.32

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Solution

The fourth proportional to 42,479.52, 63,721.76 and 12,898.32 is: 19,348.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,479.52 : 63,721.76 = 12,898.32 : x
  2. Step 2: Convert to fraction form
    42,479.52/63,721.76 = 12,898.32/x
  3. Step 3: Cross multiply
    42,479.52x = 63,721.76 × 12,898.32
  4. Step 4: Simplify right side
    42,479.52x = 821,903,651.44
  5. Step 5: Solve for x
    x = 821,903,651.44/42,479.52
  6. Step 6: Final answer
    x = 19,348.23

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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.