Home / 28,013.02-38,659.40-15,437.77

Finding the Fourth Proportional to 28,013.02, 38,659.40 and 15,437.77

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Solution

The fourth proportional to 28,013.02, 38,659.40 and 15,437.77 is: 21,304.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.02 : 38,659.40 = 15,437.77 : x
  2. Step 2: Convert to fraction form
    28,013.02/38,659.40 = 15,437.77/x
  3. Step 3: Cross multiply
    28,013.02x = 38,659.40 × 15,437.77
  4. Step 4: Simplify right side
    28,013.02x = 596,814,925.54
  5. Step 5: Solve for x
    x = 596,814,925.54/28,013.02
  6. Step 6: Final answer
    x = 21,304.91

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Half scale
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Double scale
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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.