Home / 15,752.13-21,738-9,378.96

Finding the Fourth Proportional to 15,752.13, 21,738 and 9,378.96

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Solution

The fourth proportional to 15,752.13, 21,738 and 9,378.96 is: 12,943.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,752.13 : 21,738 = 9,378.96 : x
  2. Step 2: Convert to fraction form
    15,752.13/21,738 = 9,378.96/x
  3. Step 3: Cross multiply
    15,752.13x = 21,738 × 9,378.96
  4. Step 4: Simplify right side
    15,752.13x = 203,879,832.48
  5. Step 5: Solve for x
    x = 203,879,832.48/15,752.13
  6. Step 6: Final answer
    x = 12,943.00

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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.