Home / 13,562.90-20,312.76-13,189.20

Finding the Fourth Proportional to 13,562.90, 20,312.76 and 13,189.20

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Solution

The fourth proportional to 13,562.90, 20,312.76 and 13,189.20 is: 19,753.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,562.90 : 20,312.76 = 13,189.20 : x
  2. Step 2: Convert to fraction form
    13,562.90/20,312.76 = 13,189.20/x
  3. Step 3: Cross multiply
    13,562.90x = 20,312.76 × 13,189.20
  4. Step 4: Simplify right side
    13,562.90x = 267,909,054.19
  5. Step 5: Solve for x
    x = 267,909,054.19/13,562.90
  6. Step 6: Final answer
    x = 19,753.08

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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.