Home / 28,145.52-38,840.58-15,570.18

Finding the Fourth Proportional to 28,145.52, 38,840.58 and 15,570.18

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Solution

The fourth proportional to 28,145.52, 38,840.58 and 15,570.18 is: 21,486.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.52 : 38,840.58 = 15,570.18 : x
  2. Step 2: Convert to fraction form
    28,145.52/38,840.58 = 15,570.18/x
  3. Step 3: Cross multiply
    28,145.52x = 38,840.58 × 15,570.18
  4. Step 4: Simplify right side
    28,145.52x = 604,754,821.90
  5. Step 5: Solve for x
    x = 604,754,821.90/28,145.52
  6. Step 6: Final answer
    x = 21,486.72

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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.