Home / 9,897.47-13,658.50-5,421.18

Finding the Fourth Proportional to 9,897.47, 13,658.50 and 5,421.18

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Solution

The fourth proportional to 9,897.47, 13,658.50 and 5,421.18 is: 7,481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,897.47 : 13,658.50 = 5,421.18 : x
  2. Step 2: Convert to fraction form
    9,897.47/13,658.50 = 5,421.18/x
  3. Step 3: Cross multiply
    9,897.47x = 13,658.50 × 5,421.18
  4. Step 4: Simplify right side
    9,897.47x = 74,045,152.95
  5. Step 5: Solve for x
    x = 74,045,152.95/9,897.47
  6. Step 6: Final answer
    x = 7,481.22

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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.