Home / 42,005.85-63,007.43-13,927.20

Finding the Fourth Proportional to 42,005.85, 63,007.43 and 13,927.20

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Solution

The fourth proportional to 42,005.85, 63,007.43 and 13,927.20 is: 20,890.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,005.85 : 63,007.43 = 13,927.20 : x
  2. Step 2: Convert to fraction form
    42,005.85/63,007.43 = 13,927.20/x
  3. Step 3: Cross multiply
    42,005.85x = 63,007.43 × 13,927.20
  4. Step 4: Simplify right side
    42,005.85x = 877,517,009.46
  5. Step 5: Solve for x
    x = 877,517,009.46/42,005.85
  6. Step 6: Final answer
    x = 20,890.35

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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.