Home / 21,114.30-31,658.88-7,070.92

Finding the Fourth Proportional to 21,114.30, 31,658.88 and 7,070.92

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Solution

The fourth proportional to 21,114.30, 31,658.88 and 7,070.92 is: 10,602.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.30 : 31,658.88 = 7,070.92 : x
  2. Step 2: Convert to fraction form
    21,114.30/31,658.88 = 7,070.92/x
  3. Step 3: Cross multiply
    21,114.30x = 31,658.88 × 7,070.92
  4. Step 4: Simplify right side
    21,114.30x = 223,857,407.77
  5. Step 5: Solve for x
    x = 223,857,407.77/21,114.30
  6. Step 6: Final answer
    x = 10,602.17

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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.