Home / 15,818.80-23,699.40-12,881.20

Finding the Fourth Proportional to 15,818.80, 23,699.40 and 12,881.20

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Solution

The fourth proportional to 15,818.80, 23,699.40 and 12,881.20 is: 19,298.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.80 : 23,699.40 = 12,881.20 : x
  2. Step 2: Convert to fraction form
    15,818.80/23,699.40 = 12,881.20/x
  3. Step 3: Cross multiply
    15,818.80x = 23,699.40 × 12,881.20
  4. Step 4: Simplify right side
    15,818.80x = 305,276,711.28
  5. Step 5: Solve for x
    x = 305,276,711.28/15,818.80
  6. Step 6: Final answer
    x = 19,298.35

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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.