Home / 21,159.36-31,747.76-9,307.04

Finding the Fourth Proportional to 21,159.36, 31,747.76 and 9,307.04

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Solution

The fourth proportional to 21,159.36, 31,747.76 and 9,307.04 is: 13,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.36 : 31,747.76 = 9,307.04 : x
  2. Step 2: Convert to fraction form
    21,159.36/31,747.76 = 9,307.04/x
  3. Step 3: Cross multiply
    21,159.36x = 31,747.76 × 9,307.04
  4. Step 4: Simplify right side
    21,159.36x = 295,477,672.23
  5. Step 5: Solve for x
    x = 295,477,672.23/21,159.36
  6. Step 6: Final answer
    x = 13,964.40

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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.