Home / 27,860.13-38,437.61-15,915.01

Finding the Fourth Proportional to 27,860.13, 38,437.61 and 15,915.01

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Solution

The fourth proportional to 27,860.13, 38,437.61 and 15,915.01 is: 21,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,860.13 : 38,437.61 = 15,915.01 : x
  2. Step 2: Convert to fraction form
    27,860.13/38,437.61 = 15,915.01/x
  3. Step 3: Cross multiply
    27,860.13x = 38,437.61 × 15,915.01
  4. Step 4: Simplify right side
    27,860.13x = 611,734,870.10
  5. Step 5: Solve for x
    x = 611,734,870.10/27,860.13
  6. Step 6: Final answer
    x = 21,957.36

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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.