Home / 42,285.90-63,405.81-21,526.86

Finding the Fourth Proportional to 42,285.90, 63,405.81 and 21,526.86

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Solution

The fourth proportional to 42,285.90, 63,405.81 and 21,526.86 is: 32,278.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,285.90 : 63,405.81 = 21,526.86 : x
  2. Step 2: Convert to fraction form
    42,285.90/63,405.81 = 21,526.86/x
  3. Step 3: Cross multiply
    42,285.90x = 63,405.81 × 21,526.86
  4. Step 4: Simplify right side
    42,285.90x = 1,364,927,995.06
  5. Step 5: Solve for x
    x = 1,364,927,995.06/42,285.90
  6. Step 6: Final answer
    x = 32,278.56

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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.