Home / 39,130.29-58,695.06-12,479.11

Finding the Fourth Proportional to 39,130.29, 58,695.06 and 12,479.11

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Solution

The fourth proportional to 39,130.29, 58,695.06 and 12,479.11 is: 18,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,130.29 : 58,695.06 = 12,479.11 : x
  2. Step 2: Convert to fraction form
    39,130.29/58,695.06 = 12,479.11/x
  3. Step 3: Cross multiply
    39,130.29x = 58,695.06 × 12,479.11
  4. Step 4: Simplify right side
    39,130.29x = 732,462,235.12
  5. Step 5: Solve for x
    x = 732,462,235.12/39,130.29
  6. Step 6: Final answer
    x = 18,718.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.