Home / 27,807.53-38,370.69-15,870.15

Finding the Fourth Proportional to 27,807.53, 38,370.69 and 15,870.15

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Solution

The fourth proportional to 27,807.53, 38,370.69 and 15,870.15 is: 21,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.53 : 38,370.69 = 15,870.15 : x
  2. Step 2: Convert to fraction form
    27,807.53/38,370.69 = 15,870.15/x
  3. Step 3: Cross multiply
    27,807.53x = 38,370.69 × 15,870.15
  4. Step 4: Simplify right side
    27,807.53x = 608,948,605.90
  5. Step 5: Solve for x
    x = 608,948,605.90/27,807.53
  6. Step 6: Final answer
    x = 21,898.70

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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.