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Finding the Fourth Proportional to 19,258.70, 28,897.65 and 10,945.10

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Solution

The fourth proportional to 19,258.70, 28,897.65 and 10,945.10 is: 16,423.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,258.70 : 28,897.65 = 10,945.10 : x
  2. Step 2: Convert to fraction form
    19,258.70/28,897.65 = 10,945.10/x
  3. Step 3: Cross multiply
    19,258.70x = 28,897.65 × 10,945.10
  4. Step 4: Simplify right side
    19,258.70x = 316,287,669.02
  5. Step 5: Solve for x
    x = 316,287,669.02/19,258.70
  6. Step 6: Final answer
    x = 16,423.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.