Home / 15,549.95-21,461.70-9,176.15

Finding the Fourth Proportional to 15,549.95, 21,461.70 and 9,176.15

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Solution

The fourth proportional to 15,549.95, 21,461.70 and 9,176.15 is: 12,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.95 : 21,461.70 = 9,176.15 : x
  2. Step 2: Convert to fraction form
    15,549.95/21,461.70 = 9,176.15/x
  3. Step 3: Cross multiply
    15,549.95x = 21,461.70 × 9,176.15
  4. Step 4: Simplify right side
    15,549.95x = 196,935,671.15
  5. Step 5: Solve for x
    x = 196,935,671.15/15,549.95
  6. Step 6: Final answer
    x = 12,664.72

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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.