Home / 28,079.29-38,748.40-15,503.77

Finding the Fourth Proportional to 28,079.29, 38,748.40 and 15,503.77

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Solution

The fourth proportional to 28,079.29, 38,748.40 and 15,503.77 is: 21,394.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.29 : 38,748.40 = 15,503.77 : x
  2. Step 2: Convert to fraction form
    28,079.29/38,748.40 = 15,503.77/x
  3. Step 3: Cross multiply
    28,079.29x = 38,748.40 × 15,503.77
  4. Step 4: Simplify right side
    28,079.29x = 600,746,281.47
  5. Step 5: Solve for x
    x = 600,746,281.47/28,079.29
  6. Step 6: Final answer
    x = 21,394.64

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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.