Home / 15,210.07-20,998.76-10,109.71

Finding the Fourth Proportional to 15,210.07, 20,998.76 and 10,109.71

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Solution

The fourth proportional to 15,210.07, 20,998.76 and 10,109.71 is: 13,957.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.07 : 20,998.76 = 10,109.71 : x
  2. Step 2: Convert to fraction form
    15,210.07/20,998.76 = 10,109.71/x
  3. Step 3: Cross multiply
    15,210.07x = 20,998.76 × 10,109.71
  4. Step 4: Simplify right side
    15,210.07x = 212,291,373.96
  5. Step 5: Solve for x
    x = 212,291,373.96/15,210.07
  6. Step 6: Final answer
    x = 13,957.29

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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.