Home / 28,053.28-42,070.73-9,328.16

Finding the Fourth Proportional to 28,053.28, 42,070.73 and 9,328.16

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Solution

The fourth proportional to 28,053.28, 42,070.73 and 9,328.16 is: 13,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.28 : 42,070.73 = 9,328.16 : x
  2. Step 2: Convert to fraction form
    28,053.28/42,070.73 = 9,328.16/x
  3. Step 3: Cross multiply
    28,053.28x = 42,070.73 × 9,328.16
  4. Step 4: Simplify right side
    28,053.28x = 392,442,290.40
  5. Step 5: Solve for x
    x = 392,442,290.40/28,053.28
  6. Step 6: Final answer
    x = 13,989.18

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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.