Home / 14,695.79-20,280.18-7,981.42

Finding the Fourth Proportional to 14,695.79, 20,280.18 and 7,981.42

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Solution

The fourth proportional to 14,695.79, 20,280.18 and 7,981.42 is: 11,014.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,695.79 : 20,280.18 = 7,981.42 : x
  2. Step 2: Convert to fraction form
    14,695.79/20,280.18 = 7,981.42/x
  3. Step 3: Cross multiply
    14,695.79x = 20,280.18 × 7,981.42
  4. Step 4: Simplify right side
    14,695.79x = 161,864,613.49
  5. Step 5: Solve for x
    x = 161,864,613.49/14,695.79
  6. Step 6: Final answer
    x = 11,014.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.