Home / 10,860.47-14,985.49-6,385.13

Finding the Fourth Proportional to 10,860.47, 14,985.49 and 6,385.13

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Solution

The fourth proportional to 10,860.47, 14,985.49 and 6,385.13 is: 8,810.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.47 : 14,985.49 = 6,385.13 : x
  2. Step 2: Convert to fraction form
    10,860.47/14,985.49 = 6,385.13/x
  3. Step 3: Cross multiply
    10,860.47x = 14,985.49 × 6,385.13
  4. Step 4: Simplify right side
    10,860.47x = 95,684,301.76
  5. Step 5: Solve for x
    x = 95,684,301.76/10,860.47
  6. Step 6: Final answer
    x = 8,810.33

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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.