Home / 21,488.29-32,075.39-19,905.45

Finding the Fourth Proportional to 21,488.29, 32,075.39 and 19,905.45

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Solution

The fourth proportional to 21,488.29, 32,075.39 and 19,905.45 is: 29,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.29 : 32,075.39 = 19,905.45 : x
  2. Step 2: Convert to fraction form
    21,488.29/32,075.39 = 19,905.45/x
  3. Step 3: Cross multiply
    21,488.29x = 32,075.39 × 19,905.45
  4. Step 4: Simplify right side
    21,488.29x = 638,475,001.36
  5. Step 5: Solve for x
    x = 638,475,001.36/21,488.29
  6. Step 6: Final answer
    x = 29,712.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.