Home / 31,070.59-42,880.40-19,140.91

Finding the Fourth Proportional to 31,070.59, 42,880.40 and 19,140.91

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Solution

The fourth proportional to 31,070.59, 42,880.40 and 19,140.91 is: 26,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,070.59 : 42,880.40 = 19,140.91 : x
  2. Step 2: Convert to fraction form
    31,070.59/42,880.40 = 19,140.91/x
  3. Step 3: Cross multiply
    31,070.59x = 42,880.40 × 19,140.91
  4. Step 4: Simplify right side
    31,070.59x = 820,769,781.46
  5. Step 5: Solve for x
    x = 820,769,781.46/31,070.59
  6. Step 6: Final answer
    x = 26,416.29

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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.