Home / 13,875.20-19,146.80-7,587.44

Finding the Fourth Proportional to 13,875.20, 19,146.80 and 7,587.44

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Solution

The fourth proportional to 13,875.20, 19,146.80 and 7,587.44 is: 10,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.20 : 19,146.80 = 7,587.44 : x
  2. Step 2: Convert to fraction form
    13,875.20/19,146.80 = 7,587.44/x
  3. Step 3: Cross multiply
    13,875.20x = 19,146.80 × 7,587.44
  4. Step 4: Simplify right side
    13,875.20x = 145,275,196.19
  5. Step 5: Solve for x
    x = 145,275,196.19/13,875.20
  6. Step 6: Final answer
    x = 10,470.13

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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.