Home / 10,899.61-15,036.88-6,859.28

Finding the Fourth Proportional to 10,899.61, 15,036.88 and 6,859.28

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Solution

The fourth proportional to 10,899.61, 15,036.88 and 6,859.28 is: 9,462.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.61 : 15,036.88 = 6,859.28 : x
  2. Step 2: Convert to fraction form
    10,899.61/15,036.88 = 6,859.28/x
  3. Step 3: Cross multiply
    10,899.61x = 15,036.88 × 6,859.28
  4. Step 4: Simplify right side
    10,899.61x = 103,142,193.91
  5. Step 5: Solve for x
    x = 103,142,193.91/10,899.61
  6. Step 6: Final answer
    x = 9,462.92

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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.