Home / 12,430.28-17,148.90-7,953.08

Finding the Fourth Proportional to 12,430.28, 17,148.90 and 7,953.08

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Solution

The fourth proportional to 12,430.28, 17,148.90 and 7,953.08 is: 10,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.28 : 17,148.90 = 7,953.08 : x
  2. Step 2: Convert to fraction form
    12,430.28/17,148.90 = 7,953.08/x
  3. Step 3: Cross multiply
    12,430.28x = 17,148.90 × 7,953.08
  4. Step 4: Simplify right side
    12,430.28x = 136,386,573.61
  5. Step 5: Solve for x
    x = 136,386,573.61/12,430.28
  6. Step 6: Final answer
    x = 10,972.12

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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.