Home / 15,440.76-21,298.74-13,456.08

Finding the Fourth Proportional to 15,440.76, 21,298.74 and 13,456.08

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Solution

The fourth proportional to 15,440.76, 21,298.74 and 13,456.08 is: 18,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.76 : 21,298.74 = 13,456.08 : x
  2. Step 2: Convert to fraction form
    15,440.76/21,298.74 = 13,456.08/x
  3. Step 3: Cross multiply
    15,440.76x = 21,298.74 × 13,456.08
  4. Step 4: Simplify right side
    15,440.76x = 286,597,549.34
  5. Step 5: Solve for x
    x = 286,597,549.34/15,440.76
  6. Step 6: Final answer
    x = 18,561.10

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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.