Home / 13,259.88-18,298.38-7,291.20

Finding the Fourth Proportional to 13,259.88, 18,298.38 and 7,291.20

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Solution

The fourth proportional to 13,259.88, 18,298.38 and 7,291.20 is: 10,061.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.88 : 18,298.38 = 7,291.20 : x
  2. Step 2: Convert to fraction form
    13,259.88/18,298.38 = 7,291.20/x
  3. Step 3: Cross multiply
    13,259.88x = 18,298.38 × 7,291.20
  4. Step 4: Simplify right side
    13,259.88x = 133,417,148.26
  5. Step 5: Solve for x
    x = 133,417,148.26/13,259.88
  6. Step 6: Final answer
    x = 10,061.72

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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.