Home / 19,518.88-29,281.20-9,129.76

Finding the Fourth Proportional to 19,518.88, 29,281.20 and 9,129.76

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Solution

The fourth proportional to 19,518.88, 29,281.20 and 9,129.76 is: 13,695.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518.88 : 29,281.20 = 9,129.76 : x
  2. Step 2: Convert to fraction form
    19,518.88/29,281.20 = 9,129.76/x
  3. Step 3: Cross multiply
    19,518.88x = 29,281.20 × 9,129.76
  4. Step 4: Simplify right side
    19,518.88x = 267,330,328.51
  5. Step 5: Solve for x
    x = 267,330,328.51/19,518.88
  6. Step 6: Final answer
    x = 13,695.99

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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.