Home / 10,875.47-15,008.19-6,399.41

Finding the Fourth Proportional to 10,875.47, 15,008.19 and 6,399.41

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Solution

The fourth proportional to 10,875.47, 15,008.19 and 6,399.41 is: 8,831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,875.47 : 15,008.19 = 6,399.41 : x
  2. Step 2: Convert to fraction form
    10,875.47/15,008.19 = 6,399.41/x
  3. Step 3: Cross multiply
    10,875.47x = 15,008.19 × 6,399.41
  4. Step 4: Simplify right side
    10,875.47x = 96,043,561.17
  5. Step 5: Solve for x
    x = 96,043,561.17/10,875.47
  6. Step 6: Final answer
    x = 8,831.21

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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.