Home / 15,239.40-21,030.12-8,867.22

Finding the Fourth Proportional to 15,239.40, 21,030.12 and 8,867.22

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Solution

The fourth proportional to 15,239.40, 21,030.12 and 8,867.22 is: 12,236.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.40 : 21,030.12 = 8,867.22 : x
  2. Step 2: Convert to fraction form
    15,239.40/21,030.12 = 8,867.22/x
  3. Step 3: Cross multiply
    15,239.40x = 21,030.12 × 8,867.22
  4. Step 4: Simplify right side
    15,239.40x = 186,478,700.67
  5. Step 5: Solve for x
    x = 186,478,700.67/15,239.40
  6. Step 6: Final answer
    x = 12,236.62

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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.