Home / 31,442.19-47,148.71-18,298.32

Finding the Fourth Proportional to 31,442.19, 47,148.71 and 18,298.32

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Solution

The fourth proportional to 31,442.19, 47,148.71 and 18,298.32 is: 27,438.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.19 : 47,148.71 = 18,298.32 : x
  2. Step 2: Convert to fraction form
    31,442.19/47,148.71 = 18,298.32/x
  3. Step 3: Cross multiply
    31,442.19x = 47,148.71 × 18,298.32
  4. Step 4: Simplify right side
    31,442.19x = 862,742,091.68
  5. Step 5: Solve for x
    x = 862,742,091.68/31,442.19
  6. Step 6: Final answer
    x = 27,438.99

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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.