Home / 38,148.65-52,643.01-21,151.90

Finding the Fourth Proportional to 38,148.65, 52,643.01 and 21,151.90

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Solution

The fourth proportional to 38,148.65, 52,643.01 and 21,151.90 is: 29,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,148.65 : 52,643.01 = 21,151.90 : x
  2. Step 2: Convert to fraction form
    38,148.65/52,643.01 = 21,151.90/x
  3. Step 3: Cross multiply
    38,148.65x = 52,643.01 × 21,151.90
  4. Step 4: Simplify right side
    38,148.65x = 1,113,499,420.00
  5. Step 5: Solve for x
    x = 1,113,499,420.00/38,148.65
  6. Step 6: Final answer
    x = 29,188.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.