Home / 15,816.66-21,830.02-10,158.55

Finding the Fourth Proportional to 15,816.66, 21,830.02 and 10,158.55

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Solution

The fourth proportional to 15,816.66, 21,830.02 and 10,158.55 is: 14,020.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.66 : 21,830.02 = 10,158.55 : x
  2. Step 2: Convert to fraction form
    15,816.66/21,830.02 = 10,158.55/x
  3. Step 3: Cross multiply
    15,816.66x = 21,830.02 × 10,158.55
  4. Step 4: Simplify right side
    15,816.66x = 221,761,349.67
  5. Step 5: Solve for x
    x = 221,761,349.67/15,816.66
  6. Step 6: Final answer
    x = 14,020.74

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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.