Home / 28,250.84-42,385.98-12,679.40

Finding the Fourth Proportional to 28,250.84, 42,385.98 and 12,679.40

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Solution

The fourth proportional to 28,250.84, 42,385.98 and 12,679.40 is: 19,023.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.84 : 42,385.98 = 12,679.40 : x
  2. Step 2: Convert to fraction form
    28,250.84/42,385.98 = 12,679.40/x
  3. Step 3: Cross multiply
    28,250.84x = 42,385.98 × 12,679.40
  4. Step 4: Simplify right side
    28,250.84x = 537,428,794.81
  5. Step 5: Solve for x
    x = 537,428,794.81/28,250.84
  6. Step 6: Final answer
    x = 19,023.46

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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.