Home / 20,439.88-30,718.14-10,058.92

Finding the Fourth Proportional to 20,439.88, 30,718.14 and 10,058.92

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Solution

The fourth proportional to 20,439.88, 30,718.14 and 10,058.92 is: 15,117.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.88 : 30,718.14 = 10,058.92 : x
  2. Step 2: Convert to fraction form
    20,439.88/30,718.14 = 10,058.92/x
  3. Step 3: Cross multiply
    20,439.88x = 30,718.14 × 10,058.92
  4. Step 4: Simplify right side
    20,439.88x = 308,991,312.81
  5. Step 5: Solve for x
    x = 308,991,312.81/20,439.88
  6. Step 6: Final answer
    x = 15,117.08

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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.