Home / 42,479.91-63,715.74-12,898.00

Finding the Fourth Proportional to 42,479.91, 63,715.74 and 12,898.00

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Solution

The fourth proportional to 42,479.91, 63,715.74 and 12,898.00 is: 19,345.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,479.91 : 63,715.74 = 12,898.00 : x
  2. Step 2: Convert to fraction form
    42,479.91/63,715.74 = 12,898.00/x
  3. Step 3: Cross multiply
    42,479.91x = 63,715.74 × 12,898.00
  4. Step 4: Simplify right side
    42,479.91x = 821,805,503.60
  5. Step 5: Solve for x
    x = 821,805,503.60/42,479.91
  6. Step 6: Final answer
    x = 19,345.75

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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.