Home / 15,552.30-21,461.53-8,478.57

Finding the Fourth Proportional to 15,552.30, 21,461.53 and 8,478.57

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Solution

The fourth proportional to 15,552.30, 21,461.53 and 8,478.57 is: 11,700.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.30 : 21,461.53 = 8,478.57 : x
  2. Step 2: Convert to fraction form
    15,552.30/21,461.53 = 8,478.57/x
  3. Step 3: Cross multiply
    15,552.30x = 21,461.53 × 8,478.57
  4. Step 4: Simplify right side
    15,552.30x = 181,963,084.41
  5. Step 5: Solve for x
    x = 181,963,084.41/15,552.30
  6. Step 6: Final answer
    x = 11,700.08

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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.