Home / 21,038.24-29,034.78-15,723.80

Finding the Fourth Proportional to 21,038.24, 29,034.78 and 15,723.80

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Solution

The fourth proportional to 21,038.24, 29,034.78 and 15,723.80 is: 21,700.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.24 : 29,034.78 = 15,723.80 : x
  2. Step 2: Convert to fraction form
    21,038.24/29,034.78 = 15,723.80/x
  3. Step 3: Cross multiply
    21,038.24x = 29,034.78 × 15,723.80
  4. Step 4: Simplify right side
    21,038.24x = 456,537,073.76
  5. Step 5: Solve for x
    x = 456,537,073.76/21,038.24
  6. Step 6: Final answer
    x = 21,700.35

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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.