Home / 20,690.08-30,875.24-18,475.04

Finding the Fourth Proportional to 20,690.08, 30,875.24 and 18,475.04

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Solution

The fourth proportional to 20,690.08, 30,875.24 and 18,475.04 is: 27,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.08 : 30,875.24 = 18,475.04 : x
  2. Step 2: Convert to fraction form
    20,690.08/30,875.24 = 18,475.04/x
  3. Step 3: Cross multiply
    20,690.08x = 30,875.24 × 18,475.04
  4. Step 4: Simplify right side
    20,690.08x = 570,421,294.01
  5. Step 5: Solve for x
    x = 570,421,294.01/20,690.08
  6. Step 6: Final answer
    x = 27,569.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.