Home / 20,686.59-31,045.47-15,154.08

Finding the Fourth Proportional to 20,686.59, 31,045.47 and 15,154.08

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Solution

The fourth proportional to 20,686.59, 31,045.47 and 15,154.08 is: 22,742.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.59 : 31,045.47 = 15,154.08 : x
  2. Step 2: Convert to fraction form
    20,686.59/31,045.47 = 15,154.08/x
  3. Step 3: Cross multiply
    20,686.59x = 31,045.47 × 15,154.08
  4. Step 4: Simplify right side
    20,686.59x = 470,465,536.02
  5. Step 5: Solve for x
    x = 470,465,536.02/20,686.59
  6. Step 6: Final answer
    x = 22,742.54

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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.