Home / 10,987.95-15,159.64-6,207.20

Finding the Fourth Proportional to 10,987.95, 15,159.64 and 6,207.20

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Solution

The fourth proportional to 10,987.95, 15,159.64 and 6,207.20 is: 8,563.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.95 : 15,159.64 = 6,207.20 : x
  2. Step 2: Convert to fraction form
    10,987.95/15,159.64 = 6,207.20/x
  3. Step 3: Cross multiply
    10,987.95x = 15,159.64 × 6,207.20
  4. Step 4: Simplify right side
    10,987.95x = 94,098,810.57
  5. Step 5: Solve for x
    x = 94,098,810.57/10,987.95
  6. Step 6: Final answer
    x = 8,563.82

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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.