Home / 27,870.10-38,461.01-15,123.26

Finding the Fourth Proportional to 27,870.10, 38,461.01 and 15,123.26

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Solution

The fourth proportional to 27,870.10, 38,461.01 and 15,123.26 is: 20,870.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.10 : 38,461.01 = 15,123.26 : x
  2. Step 2: Convert to fraction form
    27,870.10/38,461.01 = 15,123.26/x
  3. Step 3: Cross multiply
    27,870.10x = 38,461.01 × 15,123.26
  4. Step 4: Simplify right side
    27,870.10x = 581,655,874.63
  5. Step 5: Solve for x
    x = 581,655,874.63/27,870.10
  6. Step 6: Final answer
    x = 20,870.25

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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.