Home / 13,416.60-18,506.70-8,700.90

Finding the Fourth Proportional to 13,416.60, 18,506.70 and 8,700.90

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Solution

The fourth proportional to 13,416.60, 18,506.70 and 8,700.90 is: 12,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.60 : 18,506.70 = 8,700.90 : x
  2. Step 2: Convert to fraction form
    13,416.60/18,506.70 = 8,700.90/x
  3. Step 3: Cross multiply
    13,416.60x = 18,506.70 × 8,700.90
  4. Step 4: Simplify right side
    13,416.60x = 161,024,946.03
  5. Step 5: Solve for x
    x = 161,024,946.03/13,416.60
  6. Step 6: Final answer
    x = 12,001.92

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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.