Home / 12,326.04-18,490.68-4,931.28

Finding the Fourth Proportional to 12,326.04, 18,490.68 and 4,931.28

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Solution

The fourth proportional to 12,326.04, 18,490.68 and 4,931.28 is: 7,397.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,326.04 : 18,490.68 = 4,931.28 : x
  2. Step 2: Convert to fraction form
    12,326.04/18,490.68 = 4,931.28/x
  3. Step 3: Cross multiply
    12,326.04x = 18,490.68 × 4,931.28
  4. Step 4: Simplify right side
    12,326.04x = 91,182,720.47
  5. Step 5: Solve for x
    x = 91,182,720.47/12,326.04
  6. Step 6: Final answer
    x = 7,397.57

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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.