Home / 21,426.08-29,537.55-15,750.81

Finding the Fourth Proportional to 21,426.08, 29,537.55 and 15,750.81

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Solution

The fourth proportional to 21,426.08, 29,537.55 and 15,750.81 is: 21,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.08 : 29,537.55 = 15,750.81 : x
  2. Step 2: Convert to fraction form
    21,426.08/29,537.55 = 15,750.81/x
  3. Step 3: Cross multiply
    21,426.08x = 29,537.55 × 15,750.81
  4. Step 4: Simplify right side
    21,426.08x = 465,240,337.92
  5. Step 5: Solve for x
    x = 465,240,337.92/21,426.08
  6. Step 6: Final answer
    x = 21,713.75

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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.