Home / 15,130.48-20,873.55-8,666.68

Finding the Fourth Proportional to 15,130.48, 20,873.55 and 8,666.68

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Solution

The fourth proportional to 15,130.48, 20,873.55 and 8,666.68 is: 11,956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.48 : 20,873.55 = 8,666.68 : x
  2. Step 2: Convert to fraction form
    15,130.48/20,873.55 = 8,666.68/x
  3. Step 3: Cross multiply
    15,130.48x = 20,873.55 × 8,666.68
  4. Step 4: Simplify right side
    15,130.48x = 180,904,378.31
  5. Step 5: Solve for x
    x = 180,904,378.31/15,130.48
  6. Step 6: Final answer
    x = 11,956.29

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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.