Home / 28,074.60-38,750.40-16,139.25

Finding the Fourth Proportional to 28,074.60, 38,750.40 and 16,139.25

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Solution

The fourth proportional to 28,074.60, 38,750.40 and 16,139.25 is: 22,276.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.60 : 38,750.40 = 16,139.25 : x
  2. Step 2: Convert to fraction form
    28,074.60/38,750.40 = 16,139.25/x
  3. Step 3: Cross multiply
    28,074.60x = 38,750.40 × 16,139.25
  4. Step 4: Simplify right side
    28,074.60x = 625,402,393.20
  5. Step 5: Solve for x
    x = 625,402,393.20/28,074.60
  6. Step 6: Final answer
    x = 22,276.45

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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.