Home / 10,657.18-15,987.16-5,720.06

Finding the Fourth Proportional to 10,657.18, 15,987.16 and 5,720.06

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Solution

The fourth proportional to 10,657.18, 15,987.16 and 5,720.06 is: 8,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,657.18 : 15,987.16 = 5,720.06 : x
  2. Step 2: Convert to fraction form
    10,657.18/15,987.16 = 5,720.06/x
  3. Step 3: Cross multiply
    10,657.18x = 15,987.16 × 5,720.06
  4. Step 4: Simplify right side
    10,657.18x = 91,447,514.43
  5. Step 5: Solve for x
    x = 91,447,514.43/10,657.18
  6. Step 6: Final answer
    x = 8,580.84

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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.