Home / 18,315.16-25,274.93-9,931.66

Finding the Fourth Proportional to 18,315.16, 25,274.93 and 9,931.66

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Solution

The fourth proportional to 18,315.16, 25,274.93 and 9,931.66 is: 13,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.16 : 25,274.93 = 9,931.66 : x
  2. Step 2: Convert to fraction form
    18,315.16/25,274.93 = 9,931.66/x
  3. Step 3: Cross multiply
    18,315.16x = 25,274.93 × 9,931.66
  4. Step 4: Simplify right side
    18,315.16x = 251,022,011.28
  5. Step 5: Solve for x
    x = 251,022,011.28/18,315.16
  6. Step 6: Final answer
    x = 13,705.70

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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.