Home / 28,281.06-39,026.33-15,705

Finding the Fourth Proportional to 28,281.06, 39,026.33 and 15,705

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Solution

The fourth proportional to 28,281.06, 39,026.33 and 15,705 is: 21,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.06 : 39,026.33 = 15,705 : x
  2. Step 2: Convert to fraction form
    28,281.06/39,026.33 = 15,705/x
  3. Step 3: Cross multiply
    28,281.06x = 39,026.33 × 15,705
  4. Step 4: Simplify right side
    28,281.06x = 612,908,434.13
  5. Step 5: Solve for x
    x = 612,908,434.13/28,281.06
  6. Step 6: Final answer
    x = 21,672.05

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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.