Home / 29,328.12-40,472.88-15,899.34

Finding the Fourth Proportional to 29,328.12, 40,472.88 and 15,899.34

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Solution

The fourth proportional to 29,328.12, 40,472.88 and 15,899.34 is: 21,941.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,328.12 : 40,472.88 = 15,899.34 : x
  2. Step 2: Convert to fraction form
    29,328.12/40,472.88 = 15,899.34/x
  3. Step 3: Cross multiply
    29,328.12x = 40,472.88 × 15,899.34
  4. Step 4: Simplify right side
    29,328.12x = 643,492,079.90
  5. Step 5: Solve for x
    x = 643,492,079.90/29,328.12
  6. Step 6: Final answer
    x = 21,941.13

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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.