Home / 31,538.32-47,307.47-12,828.53

Finding the Fourth Proportional to 31,538.32, 47,307.47 and 12,828.53

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Solution

The fourth proportional to 31,538.32, 47,307.47 and 12,828.53 is: 19,242.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,538.32 : 47,307.47 = 12,828.53 : x
  2. Step 2: Convert to fraction form
    31,538.32/47,307.47 = 12,828.53/x
  3. Step 3: Cross multiply
    31,538.32x = 47,307.47 × 12,828.53
  4. Step 4: Simplify right side
    31,538.32x = 606,885,298.12
  5. Step 5: Solve for x
    x = 606,885,298.12/31,538.32
  6. Step 6: Final answer
    x = 19,242.79

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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.