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Finding the Fourth Proportional to 27,316.40, 40,945.80 and 15,604.40

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Solution

The fourth proportional to 27,316.40, 40,945.80 and 15,604.40 is: 23,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,316.40 : 40,945.80 = 15,604.40 : x
  2. Step 2: Convert to fraction form
    27,316.40/40,945.80 = 15,604.40/x
  3. Step 3: Cross multiply
    27,316.40x = 40,945.80 × 15,604.40
  4. Step 4: Simplify right side
    27,316.40x = 638,934,641.52
  5. Step 5: Solve for x
    x = 638,934,641.52/27,316.40
  6. Step 6: Final answer
    x = 23,390.15

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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.