Home / 10,211.02-15,386.01-8,402.70

Finding the Fourth Proportional to 10,211.02, 15,386.01 and 8,402.70

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Solution

The fourth proportional to 10,211.02, 15,386.01 and 8,402.70 is: 12,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.02 : 15,386.01 = 8,402.70 : x
  2. Step 2: Convert to fraction form
    10,211.02/15,386.01 = 8,402.70/x
  3. Step 3: Cross multiply
    10,211.02x = 15,386.01 × 8,402.70
  4. Step 4: Simplify right side
    10,211.02x = 129,284,026.23
  5. Step 5: Solve for x
    x = 129,284,026.23/10,211.02
  6. Step 6: Final answer
    x = 12,661.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.