Home / 13,543.79-18,690.09-7,575.71

Finding the Fourth Proportional to 13,543.79, 18,690.09 and 7,575.71

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Solution

The fourth proportional to 13,543.79, 18,690.09 and 7,575.71 is: 10,454.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.79 : 18,690.09 = 7,575.71 : x
  2. Step 2: Convert to fraction form
    13,543.79/18,690.09 = 7,575.71/x
  3. Step 3: Cross multiply
    13,543.79x = 18,690.09 × 7,575.71
  4. Step 4: Simplify right side
    13,543.79x = 141,590,701.71
  5. Step 5: Solve for x
    x = 141,590,701.71/13,543.79
  6. Step 6: Final answer
    x = 10,454.29

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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.