Home / 21,328.29-29,441.07-18,332.10

Finding the Fourth Proportional to 21,328.29, 29,441.07 and 18,332.10

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Solution

The fourth proportional to 21,328.29, 29,441.07 and 18,332.10 is: 25,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.29 : 29,441.07 = 18,332.10 : x
  2. Step 2: Convert to fraction form
    21,328.29/29,441.07 = 18,332.10/x
  3. Step 3: Cross multiply
    21,328.29x = 29,441.07 × 18,332.10
  4. Step 4: Simplify right side
    21,328.29x = 539,716,639.35
  5. Step 5: Solve for x
    x = 539,716,639.35/21,328.29
  6. Step 6: Final answer
    x = 25,305.20

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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.