Home / 22,909.77-31,539.38-20,547.81

Finding the Fourth Proportional to 22,909.77, 31,539.38 and 20,547.81

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Solution

The fourth proportional to 22,909.77, 31,539.38 and 20,547.81 is: 28,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,909.77 : 31,539.38 = 20,547.81 : x
  2. Step 2: Convert to fraction form
    22,909.77/31,539.38 = 20,547.81/x
  3. Step 3: Cross multiply
    22,909.77x = 31,539.38 × 20,547.81
  4. Step 4: Simplify right side
    22,909.77x = 648,065,085.02
  5. Step 5: Solve for x
    x = 648,065,085.02/22,909.77
  6. Step 6: Final answer
    x = 28,287.72

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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.