Home / 20,644.16-28,275.47-19,432.31

Finding the Fourth Proportional to 20,644.16, 28,275.47 and 19,432.31

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Solution

The fourth proportional to 20,644.16, 28,275.47 and 19,432.31 is: 26,615.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.16 : 28,275.47 = 19,432.31 : x
  2. Step 2: Convert to fraction form
    20,644.16/28,275.47 = 19,432.31/x
  3. Step 3: Cross multiply
    20,644.16x = 28,275.47 × 19,432.31
  4. Step 4: Simplify right side
    20,644.16x = 549,457,459.90
  5. Step 5: Solve for x
    x = 549,457,459.90/20,644.16
  6. Step 6: Final answer
    x = 26,615.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.