Home / 11,985.13-16,547.19-7,738.10

Finding the Fourth Proportional to 11,985.13, 16,547.19 and 7,738.10

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Solution

The fourth proportional to 11,985.13, 16,547.19 and 7,738.10 is: 10,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.13 : 16,547.19 = 7,738.10 : x
  2. Step 2: Convert to fraction form
    11,985.13/16,547.19 = 7,738.10/x
  3. Step 3: Cross multiply
    11,985.13x = 16,547.19 × 7,738.10
  4. Step 4: Simplify right side
    11,985.13x = 128,043,772.25
  5. Step 5: Solve for x
    x = 128,043,772.25/11,985.13
  6. Step 6: Final answer
    x = 10,683.55

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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.