Home / 10,875.13-15,009.71-6,398.66

Finding the Fourth Proportional to 10,875.13, 15,009.71 and 6,398.66

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Solution

The fourth proportional to 10,875.13, 15,009.71 and 6,398.66 is: 8,831.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,875.13 : 15,009.71 = 6,398.66 : x
  2. Step 2: Convert to fraction form
    10,875.13/15,009.71 = 6,398.66/x
  3. Step 3: Cross multiply
    10,875.13x = 15,009.71 × 6,398.66
  4. Step 4: Simplify right side
    10,875.13x = 96,042,036.52
  5. Step 5: Solve for x
    x = 96,042,036.52/10,875.13
  6. Step 6: Final answer
    x = 8,831.35

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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.