Home / 39,386.92-54,355.28-21,482.92

Finding the Fourth Proportional to 39,386.92, 54,355.28 and 21,482.92

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Solution

The fourth proportional to 39,386.92, 54,355.28 and 21,482.92 is: 29,647.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386.92 : 54,355.28 = 21,482.92 : x
  2. Step 2: Convert to fraction form
    39,386.92/54,355.28 = 21,482.92/x
  3. Step 3: Cross multiply
    39,386.92x = 54,355.28 × 21,482.92
  4. Step 4: Simplify right side
    39,386.92x = 1,167,710,131.82
  5. Step 5: Solve for x
    x = 1,167,710,131.82/39,386.92
  6. Step 6: Final answer
    x = 29,647.16

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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.