Home / 31,070.95-42,876.14-18,324.67

Finding the Fourth Proportional to 31,070.95, 42,876.14 and 18,324.67

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Solution

The fourth proportional to 31,070.95, 42,876.14 and 18,324.67 is: 25,287.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,070.95 : 42,876.14 = 18,324.67 : x
  2. Step 2: Convert to fraction form
    31,070.95/42,876.14 = 18,324.67/x
  3. Step 3: Cross multiply
    31,070.95x = 42,876.14 × 18,324.67
  4. Step 4: Simplify right side
    31,070.95x = 785,690,937.66
  5. Step 5: Solve for x
    x = 785,690,937.66/31,070.95
  6. Step 6: Final answer
    x = 25,287.00

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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.