Home / 15,818.28-23,731.05-5,430

Finding the Fourth Proportional to 15,818.28, 23,731.05 and 5,430

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Solution

The fourth proportional to 15,818.28, 23,731.05 and 5,430 is: 8,146.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.28 : 23,731.05 = 5,430 : x
  2. Step 2: Convert to fraction form
    15,818.28/23,731.05 = 5,430/x
  3. Step 3: Cross multiply
    15,818.28x = 23,731.05 × 5,430
  4. Step 4: Simplify right side
    15,818.28x = 128,859,601.50
  5. Step 5: Solve for x
    x = 128,859,601.50/15,818.28
  6. Step 6: Final answer
    x = 8,146.25

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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.