Home / 28,140.34-38,833.19-15,565.08

Finding the Fourth Proportional to 28,140.34, 38,833.19 and 15,565.08

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Solution

The fourth proportional to 28,140.34, 38,833.19 and 15,565.08 is: 21,479.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.34 : 38,833.19 = 15,565.08 : x
  2. Step 2: Convert to fraction form
    28,140.34/38,833.19 = 15,565.08/x
  3. Step 3: Cross multiply
    28,140.34x = 38,833.19 × 15,565.08
  4. Step 4: Simplify right side
    28,140.34x = 604,441,709.01
  5. Step 5: Solve for x
    x = 604,441,709.01/28,140.34
  6. Step 6: Final answer
    x = 21,479.55

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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.