Home / 13,543.89-18,690.39-7,575.50

Finding the Fourth Proportional to 13,543.89, 18,690.39 and 7,575.50

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Solution

The fourth proportional to 13,543.89, 18,690.39 and 7,575.50 is: 10,454.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.89 : 18,690.39 = 7,575.50 : x
  2. Step 2: Convert to fraction form
    13,543.89/18,690.39 = 7,575.50/x
  3. Step 3: Cross multiply
    13,543.89x = 18,690.39 × 7,575.50
  4. Step 4: Simplify right side
    13,543.89x = 141,588,955.99
  5. Step 5: Solve for x
    x = 141,588,955.99/13,543.89
  6. Step 6: Final answer
    x = 10,454.08

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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.