Home / 28,031.19-42,045.56-6,970.78

Finding the Fourth Proportional to 28,031.19, 42,045.56 and 6,970.78

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Solution

The fourth proportional to 28,031.19, 42,045.56 and 6,970.78 is: 10,455.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.19 : 42,045.56 = 6,970.78 : x
  2. Step 2: Convert to fraction form
    28,031.19/42,045.56 = 6,970.78/x
  3. Step 3: Cross multiply
    28,031.19x = 42,045.56 × 6,970.78
  4. Step 4: Simplify right side
    28,031.19x = 293,090,348.74
  5. Step 5: Solve for x
    x = 293,090,348.74/28,031.19
  6. Step 6: Final answer
    x = 10,455.87

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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.