Home / 15,328.02-21,152.88-9,040.38

Finding the Fourth Proportional to 15,328.02, 21,152.88 and 9,040.38

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Solution

The fourth proportional to 15,328.02, 21,152.88 and 9,040.38 is: 12,475.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.02 : 21,152.88 = 9,040.38 : x
  2. Step 2: Convert to fraction form
    15,328.02/21,152.88 = 9,040.38/x
  3. Step 3: Cross multiply
    15,328.02x = 21,152.88 × 9,040.38
  4. Step 4: Simplify right side
    15,328.02x = 191,230,073.29
  5. Step 5: Solve for x
    x = 191,230,073.29/15,328.02
  6. Step 6: Final answer
    x = 12,475.85

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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.