Home / 15,397.89-21,254.55-9,110.25

Finding the Fourth Proportional to 15,397.89, 21,254.55 and 9,110.25

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Solution

The fourth proportional to 15,397.89, 21,254.55 and 9,110.25 is: 12,575.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.89 : 21,254.55 = 9,110.25 : x
  2. Step 2: Convert to fraction form
    15,397.89/21,254.55 = 9,110.25/x
  3. Step 3: Cross multiply
    15,397.89x = 21,254.55 × 9,110.25
  4. Step 4: Simplify right side
    15,397.89x = 193,634,264.14
  5. Step 5: Solve for x
    x = 193,634,264.14/15,397.89
  6. Step 6: Final answer
    x = 12,575.38

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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.