Home / 10,987.45-15,158.95-6,206.69

Finding the Fourth Proportional to 10,987.45, 15,158.95 and 6,206.69

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Solution

The fourth proportional to 10,987.45, 15,158.95 and 6,206.69 is: 8,563.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.45 : 15,158.95 = 6,206.69 : x
  2. Step 2: Convert to fraction form
    10,987.45/15,158.95 = 6,206.69/x
  3. Step 3: Cross multiply
    10,987.45x = 15,158.95 × 6,206.69
  4. Step 4: Simplify right side
    10,987.45x = 94,086,925.76
  5. Step 5: Solve for x
    x = 94,086,925.76/10,987.45
  6. Step 6: Final answer
    x = 8,563.13

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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.