Home / 42,128.59-63,192.70-10,963.75

Finding the Fourth Proportional to 42,128.59, 63,192.70 and 10,963.75

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Solution

The fourth proportional to 42,128.59, 63,192.70 and 10,963.75 is: 16,445.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,128.59 : 63,192.70 = 10,963.75 : x
  2. Step 2: Convert to fraction form
    42,128.59/63,192.70 = 10,963.75/x
  3. Step 3: Cross multiply
    42,128.59x = 63,192.70 × 10,963.75
  4. Step 4: Simplify right side
    42,128.59x = 692,828,964.63
  5. Step 5: Solve for x
    x = 692,828,964.63/42,128.59
  6. Step 6: Final answer
    x = 16,445.58

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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.