Home / 15,331.60-21,158.58-10,040.68

Finding the Fourth Proportional to 15,331.60, 21,158.58 and 10,040.68

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Solution

The fourth proportional to 15,331.60, 21,158.58 and 10,040.68 is: 13,856.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.60 : 21,158.58 = 10,040.68 : x
  2. Step 2: Convert to fraction form
    15,331.60/21,158.58 = 10,040.68/x
  3. Step 3: Cross multiply
    15,331.60x = 21,158.58 × 10,040.68
  4. Step 4: Simplify right side
    15,331.60x = 212,446,531.03
  5. Step 5: Solve for x
    x = 212,446,531.03/15,331.60
  6. Step 6: Final answer
    x = 13,856.77

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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.