Home / 28,059.57-38,721.98-15,312.47

Finding the Fourth Proportional to 28,059.57, 38,721.98 and 15,312.47

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Solution

The fourth proportional to 28,059.57, 38,721.98 and 15,312.47 is: 21,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.57 : 38,721.98 = 15,312.47 : x
  2. Step 2: Convert to fraction form
    28,059.57/38,721.98 = 15,312.47/x
  3. Step 3: Cross multiply
    28,059.57x = 38,721.98 × 15,312.47
  4. Step 4: Simplify right side
    28,059.57x = 592,928,886.92
  5. Step 5: Solve for x
    x = 592,928,886.92/28,059.57
  6. Step 6: Final answer
    x = 21,131.08

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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.