Home / 42,399.86-63,599.78-14,319.99

Finding the Fourth Proportional to 42,399.86, 63,599.78 and 14,319.99

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Solution

The fourth proportional to 42,399.86, 63,599.78 and 14,319.99 is: 21,479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,399.86 : 63,599.78 = 14,319.99 : x
  2. Step 2: Convert to fraction form
    42,399.86/63,599.78 = 14,319.99/x
  3. Step 3: Cross multiply
    42,399.86x = 63,599.78 × 14,319.99
  4. Step 4: Simplify right side
    42,399.86x = 910,748,249.40
  5. Step 5: Solve for x
    x = 910,748,249.40/42,399.86
  6. Step 6: Final answer
    x = 21,479.99

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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.