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Finding the Fourth Proportional to 28,003.40, 42,053.70 and 14,881.40

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Solution

The fourth proportional to 28,003.40, 42,053.70 and 14,881.40 is: 22,347.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.40 : 42,053.70 = 14,881.40 : x
  2. Step 2: Convert to fraction form
    28,003.40/42,053.70 = 14,881.40/x
  3. Step 3: Cross multiply
    28,003.40x = 42,053.70 × 14,881.40
  4. Step 4: Simplify right side
    28,003.40x = 625,817,931.18
  5. Step 5: Solve for x
    x = 625,817,931.18/28,003.40
  6. Step 6: Final answer
    x = 22,347.93

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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.