Home / 21,049.40-31,577.45-7,902.77

Finding the Fourth Proportional to 21,049.40, 31,577.45 and 7,902.77

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Solution

The fourth proportional to 21,049.40, 31,577.45 and 7,902.77 is: 11,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.40 : 31,577.45 = 7,902.77 : x
  2. Step 2: Convert to fraction form
    21,049.40/31,577.45 = 7,902.77/x
  3. Step 3: Cross multiply
    21,049.40x = 31,577.45 × 7,902.77
  4. Step 4: Simplify right side
    21,049.40x = 249,549,127.14
  5. Step 5: Solve for x
    x = 249,549,127.14/21,049.40
  6. Step 6: Final answer
    x = 11,855.40

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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.