Home / 28,011.40-42,016.29-9,292.30

Finding the Fourth Proportional to 28,011.40, 42,016.29 and 9,292.30

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Solution

The fourth proportional to 28,011.40, 42,016.29 and 9,292.30 is: 13,938.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.40 : 42,016.29 = 9,292.30 : x
  2. Step 2: Convert to fraction form
    28,011.40/42,016.29 = 9,292.30/x
  3. Step 3: Cross multiply
    28,011.40x = 42,016.29 × 9,292.30
  4. Step 4: Simplify right side
    28,011.40x = 390,427,971.57
  5. Step 5: Solve for x
    x = 390,427,971.57/28,011.40
  6. Step 6: Final answer
    x = 13,938.18

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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.