Home / 28,314.40-39,070.48-15,565.48

Finding the Fourth Proportional to 28,314.40, 39,070.48 and 15,565.48

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Solution

The fourth proportional to 28,314.40, 39,070.48 and 15,565.48 is: 21,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,314.40 : 39,070.48 = 15,565.48 : x
  2. Step 2: Convert to fraction form
    28,314.40/39,070.48 = 15,565.48/x
  3. Step 3: Cross multiply
    28,314.40x = 39,070.48 × 15,565.48
  4. Step 4: Simplify right side
    28,314.40x = 608,150,775.03
  5. Step 5: Solve for x
    x = 608,150,775.03/28,314.40
  6. Step 6: Final answer
    x = 21,478.50

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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.