Home / 15,145.95-20,889.57-9,842.47

Finding the Fourth Proportional to 15,145.95, 20,889.57 and 9,842.47

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Solution

The fourth proportional to 15,145.95, 20,889.57 and 9,842.47 is: 13,574.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.95 : 20,889.57 = 9,842.47 : x
  2. Step 2: Convert to fraction form
    15,145.95/20,889.57 = 9,842.47/x
  3. Step 3: Cross multiply
    15,145.95x = 20,889.57 × 9,842.47
  4. Step 4: Simplify right side
    15,145.95x = 205,604,966.04
  5. Step 5: Solve for x
    x = 205,604,966.04/15,145.95
  6. Step 6: Final answer
    x = 13,574.91

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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.