Home / 20,973.17-31,475.46-13,087.20

Finding the Fourth Proportional to 20,973.17, 31,475.46 and 13,087.20

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Solution

The fourth proportional to 20,973.17, 31,475.46 and 13,087.20 is: 19,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.17 : 31,475.46 = 13,087.20 : x
  2. Step 2: Convert to fraction form
    20,973.17/31,475.46 = 13,087.20/x
  3. Step 3: Cross multiply
    20,973.17x = 31,475.46 × 13,087.20
  4. Step 4: Simplify right side
    20,973.17x = 411,925,640.11
  5. Step 5: Solve for x
    x = 411,925,640.11/20,973.17
  6. Step 6: Final answer
    x = 19,640.60

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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.