Home / 10,139.40-13,988.02-6,360

Finding the Fourth Proportional to 10,139.40, 13,988.02 and 6,360

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Solution

The fourth proportional to 10,139.40, 13,988.02 and 6,360 is: 8,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.40 : 13,988.02 = 6,360 : x
  2. Step 2: Convert to fraction form
    10,139.40/13,988.02 = 6,360/x
  3. Step 3: Cross multiply
    10,139.40x = 13,988.02 × 6,360
  4. Step 4: Simplify right side
    10,139.40x = 88,963,807.20
  5. Step 5: Solve for x
    x = 88,963,807.20/10,139.40
  6. Step 6: Final answer
    x = 8,774.07

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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.