Home / 18,315.08-25,275.06-9,931.52

Finding the Fourth Proportional to 18,315.08, 25,275.06 and 9,931.52

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Solution

The fourth proportional to 18,315.08, 25,275.06 and 9,931.52 is: 13,705.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.08 : 25,275.06 = 9,931.52 : x
  2. Step 2: Convert to fraction form
    18,315.08/25,275.06 = 9,931.52/x
  3. Step 3: Cross multiply
    18,315.08x = 25,275.06 × 9,931.52
  4. Step 4: Simplify right side
    18,315.08x = 251,019,763.89
  5. Step 5: Solve for x
    x = 251,019,763.89/18,315.08
  6. Step 6: Final answer
    x = 13,705.63

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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.