Home / 28,748-42,967.56-25,930.40

Finding the Fourth Proportional to 28,748, 42,967.56 and 25,930.40

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Solution

The fourth proportional to 28,748, 42,967.56 and 25,930.40 is: 38,756.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,748 : 42,967.56 = 25,930.40 : x
  2. Step 2: Convert to fraction form
    28,748/42,967.56 = 25,930.40/x
  3. Step 3: Cross multiply
    28,748x = 42,967.56 × 25,930.40
  4. Step 4: Simplify right side
    28,748x = 1,114,166,017.82
  5. Step 5: Solve for x
    x = 1,114,166,017.82/28,748
  6. Step 6: Final answer
    x = 38,756.30

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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.