Home / 20,962.80-31,417.20-9,266.40

Finding the Fourth Proportional to 20,962.80, 31,417.20 and 9,266.40

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Solution

The fourth proportional to 20,962.80, 31,417.20 and 9,266.40 is: 13,887.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.80 : 31,417.20 = 9,266.40 : x
  2. Step 2: Convert to fraction form
    20,962.80/31,417.20 = 9,266.40/x
  3. Step 3: Cross multiply
    20,962.80x = 31,417.20 × 9,266.40
  4. Step 4: Simplify right side
    20,962.80x = 291,124,342.08
  5. Step 5: Solve for x
    x = 291,124,342.08/20,962.80
  6. Step 6: Final answer
    x = 13,887.66

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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.