Home / 42,479.64-63,715.37-12,897.74

Finding the Fourth Proportional to 42,479.64, 63,715.37 and 12,897.74

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Solution

The fourth proportional to 42,479.64, 63,715.37 and 12,897.74 is: 19,345.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,479.64 : 63,715.37 = 12,897.74 : x
  2. Step 2: Convert to fraction form
    42,479.64/63,715.37 = 12,897.74/x
  3. Step 3: Cross multiply
    42,479.64x = 63,715.37 × 12,897.74
  4. Step 4: Simplify right side
    42,479.64x = 821,783,893.20
  5. Step 5: Solve for x
    x = 821,783,893.20/42,479.64
  6. Step 6: Final answer
    x = 19,345.36

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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.