Home / 30,973.20-42,746.70-18,397.98

Finding the Fourth Proportional to 30,973.20, 42,746.70 and 18,397.98

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Solution

The fourth proportional to 30,973.20, 42,746.70 and 18,397.98 is: 25,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,973.20 : 42,746.70 = 18,397.98 : x
  2. Step 2: Convert to fraction form
    30,973.20/42,746.70 = 18,397.98/x
  3. Step 3: Cross multiply
    30,973.20x = 42,746.70 × 18,397.98
  4. Step 4: Simplify right side
    30,973.20x = 786,452,931.67
  5. Step 5: Solve for x
    x = 786,452,931.67/30,973.20
  6. Step 6: Final answer
    x = 25,391.40

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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.