Home / 20,335.47-30,386.66-15,500.16

Finding the Fourth Proportional to 20,335.47, 30,386.66 and 15,500.16

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Solution

The fourth proportional to 20,335.47, 30,386.66 and 15,500.16 is: 23,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.47 : 30,386.66 = 15,500.16 : x
  2. Step 2: Convert to fraction form
    20,335.47/30,386.66 = 15,500.16/x
  3. Step 3: Cross multiply
    20,335.47x = 30,386.66 × 15,500.16
  4. Step 4: Simplify right side
    20,335.47x = 470,998,014.36
  5. Step 5: Solve for x
    x = 470,998,014.36/20,335.47
  6. Step 6: Final answer
    x = 23,161.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.