Home / 20,298.13-28,012.29-11,345.63

Finding the Fourth Proportional to 20,298.13, 28,012.29 and 11,345.63

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Solution

The fourth proportional to 20,298.13, 28,012.29 and 11,345.63 is: 15,657.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.13 : 28,012.29 = 11,345.63 : x
  2. Step 2: Convert to fraction form
    20,298.13/28,012.29 = 11,345.63/x
  3. Step 3: Cross multiply
    20,298.13x = 28,012.29 × 11,345.63
  4. Step 4: Simplify right side
    20,298.13x = 317,817,084.66
  5. Step 5: Solve for x
    x = 317,817,084.66/20,298.13
  6. Step 6: Final answer
    x = 15,657.46

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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.