Home / 21,259.16-31,886.69-6,468.20

Finding the Fourth Proportional to 21,259.16, 31,886.69 and 6,468.20

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Solution

The fourth proportional to 21,259.16, 31,886.69 and 6,468.20 is: 9,701.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.16 : 31,886.69 = 6,468.20 : x
  2. Step 2: Convert to fraction form
    21,259.16/31,886.69 = 6,468.20/x
  3. Step 3: Cross multiply
    21,259.16x = 31,886.69 × 6,468.20
  4. Step 4: Simplify right side
    21,259.16x = 206,249,613.61
  5. Step 5: Solve for x
    x = 206,249,613.61/21,259.16
  6. Step 6: Final answer
    x = 9,701.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.