Home / 15,306.55-21,122.50-9,348.19

Finding the Fourth Proportional to 15,306.55, 21,122.50 and 9,348.19

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Solution

The fourth proportional to 15,306.55, 21,122.50 and 9,348.19 is: 12,900.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.55 : 21,122.50 = 9,348.19 : x
  2. Step 2: Convert to fraction form
    15,306.55/21,122.50 = 9,348.19/x
  3. Step 3: Cross multiply
    15,306.55x = 21,122.50 × 9,348.19
  4. Step 4: Simplify right side
    15,306.55x = 197,457,143.28
  5. Step 5: Solve for x
    x = 197,457,143.28/15,306.55
  6. Step 6: Final answer
    x = 12,900.17

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Half scale
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Double scale
Find fourth proportional to 15,307.55, 21,123.88 and 9,349.19
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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.