Home / 27,870.13-38,475.71-21,482.74

Finding the Fourth Proportional to 27,870.13, 38,475.71 and 21,482.74

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Solution

The fourth proportional to 27,870.13, 38,475.71 and 21,482.74 is: 29,657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.13 : 38,475.71 = 21,482.74 : x
  2. Step 2: Convert to fraction form
    27,870.13/38,475.71 = 21,482.74/x
  3. Step 3: Cross multiply
    27,870.13x = 38,475.71 × 21,482.74
  4. Step 4: Simplify right side
    27,870.13x = 826,563,674.25
  5. Step 5: Solve for x
    x = 826,563,674.25/27,870.13
  6. Step 6: Final answer
    x = 29,657.69

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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.