Home / 30,891.76-42,598.80-26,430.28

Finding the Fourth Proportional to 30,891.76, 42,598.80 and 26,430.28

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Solution

The fourth proportional to 30,891.76, 42,598.80 and 26,430.28 is: 36,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,891.76 : 42,598.80 = 26,430.28 : x
  2. Step 2: Convert to fraction form
    30,891.76/42,598.80 = 26,430.28/x
  3. Step 3: Cross multiply
    30,891.76x = 42,598.80 × 26,430.28
  4. Step 4: Simplify right side
    30,891.76x = 1,125,898,211.66
  5. Step 5: Solve for x
    x = 1,125,898,211.66/30,891.76
  6. Step 6: Final answer
    x = 36,446.55

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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.