Home / 10,387.95-15,582.74-5,125.79

Finding the Fourth Proportional to 10,387.95, 15,582.74 and 5,125.79

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Solution

The fourth proportional to 10,387.95, 15,582.74 and 5,125.79 is: 7,689.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.95 : 15,582.74 = 5,125.79 : x
  2. Step 2: Convert to fraction form
    10,387.95/15,582.74 = 5,125.79/x
  3. Step 3: Cross multiply
    10,387.95x = 15,582.74 × 5,125.79
  4. Step 4: Simplify right side
    10,387.95x = 79,873,749.32
  5. Step 5: Solve for x
    x = 79,873,749.32/10,387.95
  6. Step 6: Final answer
    x = 7,689.08

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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.