Home / 18,618.40-25,693.50-10,120.59

Finding the Fourth Proportional to 18,618.40, 25,693.50 and 10,120.59

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Solution

The fourth proportional to 18,618.40, 25,693.50 and 10,120.59 is: 13,966.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.40 : 25,693.50 = 10,120.59 : x
  2. Step 2: Convert to fraction form
    18,618.40/25,693.50 = 10,120.59/x
  3. Step 3: Cross multiply
    18,618.40x = 25,693.50 × 10,120.59
  4. Step 4: Simplify right side
    18,618.40x = 260,033,417.12
  5. Step 5: Solve for x
    x = 260,033,417.12/18,618.40
  6. Step 6: Final answer
    x = 13,966.47

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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.