Home / 13,228.47-18,255.51-7,260.70

Finding the Fourth Proportional to 13,228.47, 18,255.51 and 7,260.70

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Solution

The fourth proportional to 13,228.47, 18,255.51 and 7,260.70 is: 10,019.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.47 : 18,255.51 = 7,260.70 : x
  2. Step 2: Convert to fraction form
    13,228.47/18,255.51 = 7,260.70/x
  3. Step 3: Cross multiply
    13,228.47x = 18,255.51 × 7,260.70
  4. Step 4: Simplify right side
    13,228.47x = 132,547,781.46
  5. Step 5: Solve for x
    x = 132,547,781.46/13,228.47
  6. Step 6: Final answer
    x = 10,019.89

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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.