Home / 15,870.68-21,901.02-9,581.96

Finding the Fourth Proportional to 15,870.68, 21,901.02 and 9,581.96

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Solution

The fourth proportional to 15,870.68, 21,901.02 and 9,581.96 is: 13,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.68 : 21,901.02 = 9,581.96 : x
  2. Step 2: Convert to fraction form
    15,870.68/21,901.02 = 9,581.96/x
  3. Step 3: Cross multiply
    15,870.68x = 21,901.02 × 9,581.96
  4. Step 4: Simplify right side
    15,870.68x = 209,854,697.60
  5. Step 5: Solve for x
    x = 209,854,697.60/15,870.68
  6. Step 6: Final answer
    x = 13,222.79

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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.