Home / 15,439.93-21,307.49-9,474.89

Finding the Fourth Proportional to 15,439.93, 21,307.49 and 9,474.89

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Solution

The fourth proportional to 15,439.93, 21,307.49 and 9,474.89 is: 13,075.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.93 : 21,307.49 = 9,474.89 : x
  2. Step 2: Convert to fraction form
    15,439.93/21,307.49 = 9,474.89/x
  3. Step 3: Cross multiply
    15,439.93x = 21,307.49 × 9,474.89
  4. Step 4: Simplify right side
    15,439.93x = 201,886,005.55
  5. Step 5: Solve for x
    x = 201,886,005.55/15,439.93
  6. Step 6: Final answer
    x = 13,075.58

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Double scale
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Similar ratio
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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.