Home / 15,387.08-23,064.14-10,991.21

Finding the Fourth Proportional to 15,387.08, 23,064.14 and 10,991.21

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Solution

The fourth proportional to 15,387.08, 23,064.14 and 10,991.21 is: 16,475.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.08 : 23,064.14 = 10,991.21 : x
  2. Step 2: Convert to fraction form
    15,387.08/23,064.14 = 10,991.21/x
  3. Step 3: Cross multiply
    15,387.08x = 23,064.14 × 10,991.21
  4. Step 4: Simplify right side
    15,387.08x = 253,502,891.35
  5. Step 5: Solve for x
    x = 253,502,891.35/15,387.08
  6. Step 6: Final answer
    x = 16,475.05

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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.