Home / 30,811.63-42,545.98-19,501.08

Finding the Fourth Proportional to 30,811.63, 42,545.98 and 19,501.08

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Solution

The fourth proportional to 30,811.63, 42,545.98 and 19,501.08 is: 26,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.63 : 42,545.98 = 19,501.08 : x
  2. Step 2: Convert to fraction form
    30,811.63/42,545.98 = 19,501.08/x
  3. Step 3: Cross multiply
    30,811.63x = 42,545.98 × 19,501.08
  4. Step 4: Simplify right side
    30,811.63x = 829,692,510.91
  5. Step 5: Solve for x
    x = 829,692,510.91/30,811.63
  6. Step 6: Final answer
    x = 26,927.90

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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.