Home / 28,315.15-39,071.50-15,566.23

Finding the Fourth Proportional to 28,315.15, 39,071.50 and 15,566.23

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Solution

The fourth proportional to 28,315.15, 39,071.50 and 15,566.23 is: 21,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.15 : 39,071.50 = 15,566.23 : x
  2. Step 2: Convert to fraction form
    28,315.15/39,071.50 = 15,566.23/x
  3. Step 3: Cross multiply
    28,315.15x = 39,071.50 × 15,566.23
  4. Step 4: Simplify right side
    28,315.15x = 608,195,955.45
  5. Step 5: Solve for x
    x = 608,195,955.45/28,315.15
  6. Step 6: Final answer
    x = 21,479.52

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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.