Home / 28,386.60-42,589.02-8,667.15

Finding the Fourth Proportional to 28,386.60, 42,589.02 and 8,667.15

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Solution

The fourth proportional to 28,386.60, 42,589.02 and 8,667.15 is: 13,003.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.60 : 42,589.02 = 8,667.15 : x
  2. Step 2: Convert to fraction form
    28,386.60/42,589.02 = 8,667.15/x
  3. Step 3: Cross multiply
    28,386.60x = 42,589.02 × 8,667.15
  4. Step 4: Simplify right side
    28,386.60x = 369,125,424.69
  5. Step 5: Solve for x
    x = 369,125,424.69/28,386.60
  6. Step 6: Final answer
    x = 13,003.51

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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.