Home / 9,897.24-13,657.66-5,420.15

Finding the Fourth Proportional to 9,897.24, 13,657.66 and 5,420.15

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Solution

The fourth proportional to 9,897.24, 13,657.66 and 5,420.15 is: 7,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,897.24 : 13,657.66 = 5,420.15 : x
  2. Step 2: Convert to fraction form
    9,897.24/13,657.66 = 5,420.15/x
  3. Step 3: Cross multiply
    9,897.24x = 13,657.66 × 5,420.15
  4. Step 4: Simplify right side
    9,897.24x = 74,026,565.85
  5. Step 5: Solve for x
    x = 74,026,565.85/9,897.24
  6. Step 6: Final answer
    x = 7,479.52

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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.