Home / 15,468.86-21,339.51-9,176.78

Finding the Fourth Proportional to 15,468.86, 21,339.51 and 9,176.78

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Solution

The fourth proportional to 15,468.86, 21,339.51 and 9,176.78 is: 12,659.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,468.86 : 21,339.51 = 9,176.78 : x
  2. Step 2: Convert to fraction form
    15,468.86/21,339.51 = 9,176.78/x
  3. Step 3: Cross multiply
    15,468.86x = 21,339.51 × 9,176.78
  4. Step 4: Simplify right side
    15,468.86x = 195,827,988.58
  5. Step 5: Solve for x
    x = 195,827,988.58/15,468.86
  6. Step 6: Final answer
    x = 12,659.50

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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.