Home / 10,370.80-15,547.69-4,128.13

Finding the Fourth Proportional to 10,370.80, 15,547.69 and 4,128.13

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Solution

The fourth proportional to 10,370.80, 15,547.69 and 4,128.13 is: 6,188.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,370.80 : 15,547.69 = 4,128.13 : x
  2. Step 2: Convert to fraction form
    10,370.80/15,547.69 = 4,128.13/x
  3. Step 3: Cross multiply
    10,370.80x = 15,547.69 × 4,128.13
  4. Step 4: Simplify right side
    10,370.80x = 64,182,885.52
  5. Step 5: Solve for x
    x = 64,182,885.52/10,370.80
  6. Step 6: Final answer
    x = 6,188.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.