Home / 15,545.80-21,462.60-9,881.20

Finding the Fourth Proportional to 15,545.80, 21,462.60 and 9,881.20

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Solution

The fourth proportional to 15,545.80, 21,462.60 and 9,881.20 is: 13,642.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.80 : 21,462.60 = 9,881.20 : x
  2. Step 2: Convert to fraction form
    15,545.80/21,462.60 = 9,881.20/x
  3. Step 3: Cross multiply
    15,545.80x = 21,462.60 × 9,881.20
  4. Step 4: Simplify right side
    15,545.80x = 212,076,243.12
  5. Step 5: Solve for x
    x = 212,076,243.12/15,545.80
  6. Step 6: Final answer
    x = 13,642.03

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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.