Home / 25,316.20-37,931.70-12,139.72

Finding the Fourth Proportional to 25,316.20, 37,931.70 and 12,139.72

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Solution

The fourth proportional to 25,316.20, 37,931.70 and 12,139.72 is: 18,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,316.20 : 37,931.70 = 12,139.72 : x
  2. Step 2: Convert to fraction form
    25,316.20/37,931.70 = 12,139.72/x
  3. Step 3: Cross multiply
    25,316.20x = 37,931.70 × 12,139.72
  4. Step 4: Simplify right side
    25,316.20x = 460,480,217.12
  5. Step 5: Solve for x
    x = 460,480,217.12/25,316.20
  6. Step 6: Final answer
    x = 18,189.15

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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.